Compute Services Implementation

EBS and EC2

Elastic Block Storage (EBS): Persistent block storage.

• Requires an EBS-optimized instance.
• Magnetic or SSD.

AWS Compute Optimizer:

• EC2/C2 auto-scaling, it needs 30 hours of consecutive Cloud-Watch metric data to make recommendations.

Windows Server

• Requires more power than Linux instances.
• After launching it, connect to it with Remote Desktop.
• You will need an RDP configuration file downloaded from AWs to access the Windows instance.

Shared Tenancy

• Multiple customers share the time and space on the physical machine.
• This is the default instance behavior.
• Pros: Simpler deployment, reduced costs.
• Cons: Lower performance, less control.

Dedicated Hosts

• Physical machines run the virtual machines.
• Used by one customer, explicitly configured, cannot be free.
• Pros: More accurate licensing management, detailed reporting, compliance management.
• Cons: Much more expensive.

Dedicated Instance

• Runs on a physical machine, and it’s the only instance on the machine. However…
  • On restart, it can be moved.
  • Less accurate license management.

Amazon Machine Image (AMI)

• Blueprint with server configuration.
• Hardware Virtual Machine (HVM).
  • AMIs fully virtualize the hardware.